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Where to place and how to read configuration resource files in servlet based application?
...application archive (WAR):
1. Put it in classpath
So that you can load it by ClassLoader#getResourceAsStream() with a classpath-relative path:
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
InputStream input = classLoader.getResourceAsStream("foo.properties");
// ...
Prop...
Is file append atomic in UNIX?
... size of 'PIPE_BUF' is supposed to be atomic. That should be at least 512 bytes, though it could easily be larger (linux seems to have it set to 4096).
This assume that you're talking all fully POSIX-compliant components. For instance, this isn't true on NFS.
But assuming you write to a log file...
Explain which gitignore rule is ignoring my file
Is there any way to see why some file is getting ignored by git (i.e. which rule in a .gitignore file is causing the file to be ignored)?
...
Lombok is not generating getter and setter
...
If you use STS. You must have Lombok installed in your Eclipse by running lombok-xyz.jar
Please Try the Following the Steps:
Include pom in Maven .
Exit/Shutdown STS
Find lombok Jar in ~/.m2/repository/org/projectlombok/lombok/version.x
From Command Prompt/Shell java -jar lombok-1.x....
fatal: The current branch master has no upstream branch
...s://github.com/You/YourRepo)
For https url:
If your account is protected by the two-factor authentication, your regular password won't work (for https url), as explained here or here.
Same problem if your password contains special character (as in this answer)
If https doesn't work (because yo...
Concurrent vs serial queues in GCD
... to serial queue.Tasks executed serially are always executed one at a time by the single thread associated with the Queue.
func doLongSyncTaskInSerialQueue() {
let serialQueue = DispatchQueue(label: "com.queue.Serial")
for i in 1...5 {
serialQueue.sync {
if Thread.isMai...
Persistence unit as RESOURCE_LOCAL or JTA?
... managing transactions themselves (RESOURCE_LOCAL), or having them managed by the application server's JTA implementation.
In most cases, RESOURCE_LOCAL is fine. This would use basic JDBC-level transactions. The downside is that the transaction is local to the JPA persistence unit, so if you want a...
What is an .inc and why use it?
...o name files with a .inc extension if that file is designed to be included by other PHP files, but it is only convention.
It does have a possible disadvantage which is that servers normally are not configured to parse .inc files as php, so if the file sits in your web root and your server is confi...
Read an Excel file directly from a R script
...acter data (i.e., not comma-formatted numbers, dates, formulas with divide-by-zero errors, missing values, etc. etc. ..) I generally have no problem with this process.
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CORS - What is the motivation behind introducing preflight requests?
...ary of the preflight mechanism. Yes these services could already be abused by a malicious or non-conforming user agent (and CORS does nothing to change this), but in a world with CORS the preflight mechanism provides an extra 'sanity check' so that clients and servers don't break because the underly...